NO311226B1 - Skumming av slagg - Google Patents
Skumming av slagg Download PDFInfo
- Publication number
- NO311226B1 NO311226B1 NO19995072A NO995072A NO311226B1 NO 311226 B1 NO311226 B1 NO 311226B1 NO 19995072 A NO19995072 A NO 19995072A NO 995072 A NO995072 A NO 995072A NO 311226 B1 NO311226 B1 NO 311226B1
- Authority
- NO
- Norway
- Prior art keywords
- slag
- calcium nitrate
- carbon
- foaming
- steel
- Prior art date
Links
- 239000002893 slag Substances 0.000 title claims abstract description 74
- 239000006260 foam Substances 0.000 title description 11
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims abstract description 89
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005187 foaming Methods 0.000 claims abstract description 24
- 239000010935 stainless steel Substances 0.000 claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003570 air Substances 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 6
- 229910005347 FeSi Inorganic materials 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010891 electric arc Methods 0.000 abstract description 8
- 239000004088 foaming agent Substances 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 239000000155 melt Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 7
- 235000019738 Limestone Nutrition 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 238000009847 ladle furnace Methods 0.000 description 6
- 239000006028 limestone Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003923 scrap metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical class O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/54—Processes yielding slags of special composition
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
- C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
- C21C2005/366—Foam slags
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO19995072A NO311226B1 (no) | 1999-10-18 | 1999-10-18 | Skumming av slagg |
| CNB008145172A CN1206373C (zh) | 1999-10-18 | 2000-10-18 | 用硝酸钙使炼钢渣起泡的方法及硝酸钙的这种应用 |
| PCT/NO2000/000345 WO2001029271A1 (en) | 1999-10-18 | 2000-10-18 | Method and use of calcium nitrate for foaming of steel-making slags |
| KR1020027004859A KR20020042721A (ko) | 1999-10-18 | 2000-10-18 | 제강 슬래그의 발포 방법 및 제강 슬래그의 발포용 칼슘질화물의 용도 |
| AT00970328T ATE256755T1 (de) | 1999-10-18 | 2000-10-18 | Verfahren und gebrauch von kalziumnitraten zum aufschäumen von stahlschlacken |
| JP2001532251A JP2003512523A (ja) | 1999-10-18 | 2000-10-18 | 製鋼鉱さいの発泡方法および製鋼鉱さい発泡剤としての硝酸カルシウムの使用方法 |
| CA002387597A CA2387597A1 (en) | 1999-10-18 | 2000-10-18 | Method and use of calcium nitrate for foaming of steel-making slags |
| ES00970328T ES2213049T3 (es) | 1999-10-18 | 2000-10-18 | Metodo y uso de nitrato de calcio para espumar escorias de la produccion de acero. |
| DE60007355T DE60007355T2 (de) | 1999-10-18 | 2000-10-18 | Verfahren und gebrauch von kalziumnitraten zum aufschäumen von stahlschlacken |
| AU79727/00A AU7972700A (en) | 1999-10-18 | 2000-10-18 | Method and use of calcium nitrate for foaming of steel-making slags |
| EP00970328A EP1230404B1 (en) | 1999-10-18 | 2000-10-18 | Method and use of calcium nitrate for foaming of steel-making slags |
| RU2002113094/02A RU2241046C2 (ru) | 1999-10-18 | 2000-10-18 | Способ и использование нитрата кальция для вспенивания шлаков в производстве стали |
| BR0014781-8A BR0014781A (pt) | 1999-10-18 | 2000-10-18 | Método de propiciar a expansão de uma escória de produção de aço, e, uso de nitrato de cálcio |
| ZA200202602A ZA200202602B (en) | 1999-10-18 | 2002-04-03 | Method and use of calcium nitrate for foaming of steelmaking slags. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO19995072A NO311226B1 (no) | 1999-10-18 | 1999-10-18 | Skumming av slagg |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO995072D0 NO995072D0 (no) | 1999-10-18 |
| NO995072L NO995072L (no) | 2001-04-19 |
| NO311226B1 true NO311226B1 (no) | 2001-10-29 |
Family
ID=19903873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19995072A NO311226B1 (no) | 1999-10-18 | 1999-10-18 | Skumming av slagg |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP1230404B1 (ru) |
| JP (1) | JP2003512523A (ru) |
| KR (1) | KR20020042721A (ru) |
| CN (1) | CN1206373C (ru) |
| AT (1) | ATE256755T1 (ru) |
| AU (1) | AU7972700A (ru) |
| BR (1) | BR0014781A (ru) |
| CA (1) | CA2387597A1 (ru) |
| DE (1) | DE60007355T2 (ru) |
| ES (1) | ES2213049T3 (ru) |
| NO (1) | NO311226B1 (ru) |
| RU (1) | RU2241046C2 (ru) |
| WO (1) | WO2001029271A1 (ru) |
| ZA (1) | ZA200202602B (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007050478A1 (de) | 2007-10-23 | 2009-04-30 | Sms Demag Ag | Verfahren zur Rostfreistahlerzeugung mit Direktreduktionsöfen für Ferrochrom und Ferronickel auf der Primärseite eines Konverters |
| DE102010004983A1 (de) | 2010-01-19 | 2011-07-21 | SMS Siemag Aktiengesellschaft, 40237 | Verfahren zur Schaumschlackenerzeugung einer Rostfreischmelze in einem Konverter |
| KR101295067B1 (ko) * | 2011-09-05 | 2013-08-08 | 주식회사 포스코 | 저강도 강지금 제조방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634787B1 (fr) * | 1988-08-01 | 1991-11-29 | Siderurgie Fse Inst Rech | Procede d'obtention d'un laitier moussant dans un four electrique d'acierie |
| EP0655508B1 (en) * | 1993-11-30 | 1998-08-19 | ACCIAI SPECIALI TERNI S.p.a. | Process for using foamed slag in stainless steel production in the electric arc furnace |
| JPH0841521A (ja) * | 1994-08-02 | 1996-02-13 | Nippon Steel Corp | 取鍋スラグ除去方法 |
| FR2753205B1 (fr) * | 1996-09-12 | 1998-12-04 | Usinor Sacilor | Procede pour realiser un laitier moussant au-dessus d'un acier inoxydable en fusion dans un four electrique |
-
1999
- 1999-10-18 NO NO19995072A patent/NO311226B1/no unknown
-
2000
- 2000-10-18 WO PCT/NO2000/000345 patent/WO2001029271A1/en active IP Right Grant
- 2000-10-18 AU AU79727/00A patent/AU7972700A/en not_active Abandoned
- 2000-10-18 DE DE60007355T patent/DE60007355T2/de not_active Expired - Fee Related
- 2000-10-18 RU RU2002113094/02A patent/RU2241046C2/ru not_active IP Right Cessation
- 2000-10-18 EP EP00970328A patent/EP1230404B1/en not_active Expired - Lifetime
- 2000-10-18 CA CA002387597A patent/CA2387597A1/en not_active Abandoned
- 2000-10-18 CN CNB008145172A patent/CN1206373C/zh not_active Expired - Fee Related
- 2000-10-18 JP JP2001532251A patent/JP2003512523A/ja not_active Abandoned
- 2000-10-18 ES ES00970328T patent/ES2213049T3/es not_active Expired - Lifetime
- 2000-10-18 AT AT00970328T patent/ATE256755T1/de not_active IP Right Cessation
- 2000-10-18 KR KR1020027004859A patent/KR20020042721A/ko not_active Application Discontinuation
- 2000-10-18 BR BR0014781-8A patent/BR0014781A/pt not_active IP Right Cessation
-
2002
- 2002-04-03 ZA ZA200202602A patent/ZA200202602B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE60007355D1 (de) | 2004-01-29 |
| DE60007355T2 (de) | 2004-10-07 |
| ATE256755T1 (de) | 2004-01-15 |
| BR0014781A (pt) | 2002-06-11 |
| AU7972700A (en) | 2001-04-30 |
| CN1206373C (zh) | 2005-06-15 |
| EP1230404B1 (en) | 2003-12-17 |
| WO2001029271A1 (en) | 2001-04-26 |
| CA2387597A1 (en) | 2001-04-26 |
| KR20020042721A (ko) | 2002-06-05 |
| EP1230404A1 (en) | 2002-08-14 |
| JP2003512523A (ja) | 2003-04-02 |
| RU2241046C2 (ru) | 2004-11-27 |
| CN1379825A (zh) | 2002-11-13 |
| ZA200202602B (en) | 2003-09-23 |
| ES2213049T3 (es) | 2004-08-16 |
| NO995072L (no) | 2001-04-19 |
| NO995072D0 (no) | 1999-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CREP | Change of representative |
Representative=s name: ONSAGERS AS POSTBOKS 6963 ST OLAVS PLASS OSLO, 013 |